Mental math fun with Dennis Schulman
http://www.youtube.com/watch?v=HbfA1am2keI Schulman SAT Prep: Mental math fun | Dennis Schulman | 10′ : 05″
http://www.youtube.com/watch?v=HbfA1am2keI Schulman SAT Prep: Mental math fun | Dennis Schulman | 10′ : 05″
http://www.youtube.com/watch?v=Zw5NBdPbXKk Schuman’s SAT Prep: A SAT prep class | Dennis Schulman | 3′ : 17″